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Code Issues Releases Wiki Activity

New consume logic for sub-function input parameters

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This commit is contained in:
caheckman 2020-02-05 16:33:28 -05:00
parent 0d641458ce
commit e073773a27
4 changed files with 53 additions and 13 deletions
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6
Ghidra/Features/Decompiler/src/decompile/cpp/subflow.cc
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@ -238,6 +238,10 @@ bool SubvariableFlow::tryCallPull(PcodeOp *op,ReplaceVarnode *rvn,int4 slot)
{
if (slot == 0) return false;
if (!aggressive) {
if ((rvn->vn->getConsume()&~rvn->mask)!=0) // If there's something outside the mask being consumed
return false; // Don't truncate
}
FuncCallSpecs *fc = fd->getCallSpecs(op);
if (fc == (FuncCallSpecs *)0) return false;
if (fc->isInputActive()) return false; // Don't trim while in the middle of figuring out params
@ -549,7 +553,6 @@ bool SubvariableFlow::traceForward(ReplaceVarnode *rvn)
break;
case CPUI_CALL:
case CPUI_CALLIND:
if (!aggressive) return false;
if (!tryCallPull(op,rvn,slot)) return false;
hcount += 1; // Dealt with this descendant
break;
@ -828,7 +831,6 @@ bool SubvariableFlow::traceForwardSext(ReplaceVarnode *rvn)
break;
case CPUI_CALL:
case CPUI_CALLIND:
if (!aggressive) return false;
if (!tryCallPull(op,rvn,slot)) return false;
hcount += 1; // Dealt with this descendant
break;